ぎゃくまきがいじゃなかったです
逆巻貝じゃなかったです
gyakumakigaijanakattadesu

Noun
Desu Copula

The polite, past negative form of さかまきがい

1. Wasn't a turban shell.; Wasn't a whelk.

Past/Perfective
Negative
Polite
Casual Register
Usually Written in Kana